Smartphone case



FIG. 1 is a front isometric view of a smartphone case showing our new design;

FIG. 2 is a rear isometric view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left view thereof;

FIG. 6 is a right view thereof;

FIG. 7 is a top view thereof shown on an enlarged scale; and,

FIG. 8 is a bottom view thereof shown on an enlarged scale.

The broken lines throughout the drawing figures depict portions of the smartphone case that form no part of the claimed design. 

CLAIM The ornamental design for a smartphone case, as shown and described. 